1. (1) E. Sugimoto : “Application of Polyimide films to the Electrical and Electronic Industries in Japan”, IEEE Electrical Insulation Magazine, Vol. 5, pp. 15-23 (1989)
2. (2) K. Matsui, Y. Tanaka, T. Takada, T. Fukao, K. Fukunaga, T. Maeno, and J. M. Alison : “Space Charge Behavior in Low-density Polyethylene at Pre Breakdown”, IEEE Trans. Dielectr. Electr. Insul., Vol. 12, pp. 406-415 (2005)
3. (3) T. Takada, Y. Tanaka, N. Adachi, and X. Qin : “Comparison Between the PEA Method and the PWP Method for Space Charge Measurement in Solid Dielectrics”, IEEE Trans. DEI, Vol. 5, No. 6, pp. 944-95120 (1998)
4. (4) S. Ishizaki, S. Satoh, Y. Tanaka, T. Fukao, and T. Takada : “Establishment of Space Charge Measurement Technique in Samples with Variation of Temperature”, IEEJ Trans. FM, Vol. 124, No. 10, pp. 902-908 (2004) (in Japanese)
5. (5) Y. Kishi, T. Hashimoto, H. Miyake, Y. Tanaka, and T. Takada : “Breakdown and Space Charge Formation in Polyimide Film under DC High Stress at Various Temperatures”, J. Phys. Conference Series, Vol. 183, 012005 (2009)